
.f_r{
  float: right;
}
.f_l{
  float: left;
}
.clearfix:after{
  content: '';
  height: 0;
  line-height: 0;
  display: block;
  visibility: hidden;
  clear: both;
}
.clearfix{
  zoom: 1;/*兼容IE游览器*/
}
.roll_nav{
  width: 100%;
  height: 37px;
  line-height: 37px;
  text-align: center;
  background-color: #E9E9E9;
  position: absolute;
  left: 0;
  top: 65px;
  z-index: 99;
}
.roll_nav .title{
  font-size: 14px;
  color: #666666;
  margin-left: 73px;
  line-height: 37px;
  text-align: center;
  cursor: pointer;
}
.roll_nav .title span{
  display: inline-block;
  margin-left: 5px;
  margin-right: 5px;
}
.roll_nav ul {
  width: 209px;
  margin: 0 auto;
}
.roll_nav ul li {
  text-align: center;
}
